Conditionnel Passé (Conditional Past) Tense Conjugation of the French Verb déphaser

ByMichael Burns

Introduction to the verb déphaser

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The English translation of the French verb déphaser is “to shift/phase out.” It is pronounced as “dey-fa-zay” in the infinitive form.

Déphaser comes from the combination of the prefix “dé-” meaning “out of” and the verb “phaser” meaning “to phase.” It is derived from the French word “phase” which comes from the Latin word “phasēs” meaning “phase, stage.” Déphaser is most often used in everyday French in the Conditionnel Passé tense, which expresses a hypothetical or uncertain past action or event.

Here are three simple examples of déphaser used in the Conditionnel Passé tense with the respective English translations:

  1. Si j’avais su, j’aurais déphasé mon voyage en avion. (If I had known, I would have shifted my flight.)

  2. Nous aurions dû déphaser notre réunion pour que tout le monde puisse y assister. (We should have phased out our meeting so that everyone could attend.)

  3. Tu aurais aimé déphaser ta formation pour pouvoir venir à la fête avec nous. (You would have liked to shift your training to be able to come to the party with us.)

Table of the Conditionnel Passé (Conditional Past) Tense Conjugation of déphaser

Pronoun Conjugation Example Usage English Translation
je aurais déphasé Si j’avais su, je t’aurais déphasé. I would have phased you out.
tu aurais déphasé Tu aurais déphasé plus tôt. You would have phased out earlier.
il aurait déphasé Il aurait déphasé sa participation. He would have phased out his involvement.
elle aurait déphasé Elle aurait déphasé le projet. She would have phased out the project.
on aurait déphasé On aurait déphasé le système. One would have phased out the system.
nous aurions déphasé Nous aurions déphasé la musique. We would have phased out the music.
vous auriez déphasé Vous auriez déphasé votre discours. You would have phased out your speech.
ils auraient déphasé Ils auraient déphasé leur relation. They would have phased out their relationship.
elles auraient déphasé Elles auraient déphasé leurs études. They (female) would have phased out their studies.

Other Conjugations for Déphaser.

    

    Le Present (Present Tense) Conjugation of the French Verb déphaser
     

    Imparfait (Imperfect) Tense Conjugation of the French Verb déphaser
     

    Passé Simple (Simple Past) Tense Conjugation of the French Verb déphaser
     

    Passé Composé (Present Perfect) Tense Conjugation of the French Verb déphaser
     

    Futur Simple (Simple Future) Tense Conjugation of the French Verb déphaser
     

    Futur Proche (Near Future) Tense Conjugation of the French Verb déphaser
     

    Plus-que-parfait (Pluperfect) Tense Conjugation of the French Verb déphaser
     

    Passé Antérieur (Past Anterior) Tense Conjugation of the French Verb déphaser

    Futur Antérieur (Future Anterior) Tense Conjugation of the French Verb déphaser

    Subjonctif Présent (Subjunctive Present) Tense Conjugation of the French Verb déphaser

    Subjonctif Passé (Subjunctive Past) Tense Conjugation of the French Verb déphaser
     

    Subjonctif Imparfait (Subjunctive Imperfect) Tense Conjugation of the French Verb déphaser

    Subjonctif Plus-que-parfait (Subjunctive Pluperfect) Tense Conjugation of the French Verb déphaser
     

    Conditionnel Présent (Conditional Present) Tense Conjugation of the French Verb déphaser
     

    Conditionnel Passé (Conditional Past) Tense Conjugation of the French Verb déphaser  (this article)

    L’impératif Présent (Imperative Present) Tense Conjugation of the French Verb déphaser

    L’infinitif Présent (Infinitive Present) Tense Conjugation of the French Verb déphaser


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Déphaser – About the French Conditionnel Passé (Conditional Past) Tense

The French “Conditionnel Passé” is a compound tense used to express hypothetical or unreal actions in the past. It is formed by combining the conditional of the auxiliary verb “avoir” or “être” and the past participle of the main verb.

NOTE: To take a deep dive into all the French tenses then see my article on Mastering French Tense Conjugation.

Formation

Start with the conditional of the auxiliary verb: For most verbs, use “aurais” (for “avoir”) or “serais” (for “être”) as the conditional form. 

With “avoir”: j’aurais, tu aurais, il/elle/on aurait, nous aurions, vous auriez, ils/elles auraient. 
With “être”: je serais, tu serais, il/elle/on serait, nous serions, vous seriez, ils/elles seraient. 

Add the past participle of the main verb to this conditional form. 
For example, if you want to say “I would have done,” you would use “j’aurais fait.” If you want to say “She would have gone,” you would use “elle serait allée.”

Common Everyday Usage Patterns

Expressing Unreal Past Scenarios

The Conditionnel Passé is often used to talk about actions that did not happen in the past, but you are speculating about what would have occurred if they had. It’s a way to discuss hypothetical situations in the past. 

Si j’avais su, je t’aurais aidé. (If I had known, I would have helped you.)
Il serait venu s’il avait eu le temps. (He would have come if he had had the time.) 

Polite Requests or Suggestions

It can be used to make polite requests or suggestions in the past. 

Pourriez-vous m’aider, s’il vous plaît ? (Could you have helped me, please?) 

Expressing Doubt or Uncertainty

It can convey doubt or uncertainty regarding past events.

Il aurait peut-être oublié notre rendez-vous. (He might have forgotten our appointment.)

Interactions with Other Tenses

Conditional Present

You can use the Conditionnel Passé in combination with the conditional present to describe past actions that were hypothetical at the time they were spoken about. J’aurais aimé que tu m’appelles hier. (I would have liked you to call me yesterday.) 

Indicative Past Tenses

You might use the Conditionnel Passé alongside indicative past tenses like the passé composé to contrast hypothetical and real past events. Il est venu hier, mais s’il avait pu, il serait venu la semaine dernière. (He came yesterday, but if he could have, he would have come last week.) 

Conditional Future

In some cases, you can use the Conditionnel Passé in combination with the conditional future to discuss unreal past events that could have consequences in the future. Si j’avais réussi mon examen, j’aurais un meilleur travail. (If I had passed my exam, I would have a better job.)

Summary

In summary, the Conditionnel Passé is used to express hypothetical or unreal actions in the past. It is often used in conjunction with other tenses to convey various nuances in French, allowing speakers to discuss imaginary past scenarios, make polite requests, or express doubt about past events.

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